GIS AC Withstand Voltage Test System with Partial Discharge Measurement High Voltage Resonance Test Equipment for GIS Testing

The GIS AC Withstand Voltage Test System with Partial Discharge Measurement is a high-voltage testing solution for evaluating the dielectric strength and insulation quality of gas-insulated switchgear and gas-insulated lines.

The system uses high-voltage AC test technology and can be configured with a resonance test circuit to provide an efficient test voltage for capacitive GIS/GIL test objects.

For GIS commissioning, the customer usually wants answers to two questions:

1. Can the GIS insulation withstand the specified test voltage?
2. Is there any abnormal partial discharge indicating a potential insulation problem?

This system is designed around both requirements.

• AC withstand voltage test
• High-voltage insulation test
• GIS commissioning test
• GIL withstand voltage testing
• Partial discharge measurement
• PDIV and PDEV measurement
• PD apparent charge measurement
• PRPD analysis
• Noise identification and interference suppression
• Test data recording
• Automatic test report generation

Modern GIS testing solutions may use resonance technology because GIS has significant capacitive characteristics, while variable-frequency resonance can help avoid some limitations associated with conventional fixed-frequency testing.

Energy-efficient high-voltage testing
Resonance technology can reduce the power requirement of the test source compared with a conventional approach for suitable capacitive loads.

Suitable for large GIS systems
The system can be engineered according to the GIS capacitance and required test voltage.

Integrated PD diagnostics
Partial discharge measurement adds insulation diagnostic information to the withstand test.

Field-oriented design
For on-site GIS commissioning, compact and modular components can make transportation and installation easier.

Q: What is the difference between GIS withstand voltage testing and GIS PD testing?
Withstand testing evaluates whether insulation can tolerate a specified voltage, while PD testing detects localized insulation discharge activity.

Q: Why combine the two tests?
Because a simple withstand test mainly provides a pass/fail result. PD measurement can provide more detailed information about the insulation condition.

Q: Can the system test GIL as well as GIS?
A suitable configuration can be designed for GIL testing. The required voltage, capacitance and test configuration need to be confirmed before selection.

Q: Can variable-frequency resonance be used for GIS testing?
Yes, variable-frequency resonance systems are used for GIS high-voltage testing, depending on the GIS configuration and test requirements.